Impedance

Impedance measurement is important not only in passive components industry but also various industries such as materials, power supply, and so on. Physical parameters like capacitance (C), inductance (L) and resistance (R) are measured based on the impedance. Also, material parameters (permittivity: ε, permeability: μ) can be derived through impedance measurements. Keysight has a complete line of impedance test equipment and test accessories to help your measurement. When you choose an impedance measurement product from Keysight, you get more than accurate and reliable test results.

This application note presents the technologies and methods for measuring permittivity and permeability. The document focuses on impedance measurement technology with the following advantages: Wide frequency range from 20Hz to 1GHz High measurement accuracy Simple preparations (fabrication of material, measurement setup) for measurement.

This application note gives an overview on how to evaluate electromagnetic compatible (EMC) components in a way that satisfies strict EMC requirements. It also introduces various EMC measurement solutions.

This describes the E4991A 3GHz RF impedance/material analyzer and new 3 GHz test fixtures. It provides information for high frequency device evaluation such as chip inductor, chip capacitor and EMI filters.

Auto-balancing bridge method is the best technique to make an accurate impedance measurement in LF frequency. The recent technical innovation successfully expanded its upper frequency limitation from 40MHz to 110MHz. This Product Note discusses how its made and other new technologies included in...

Transformers/LF coils have gradually become miniaturized and are used in power supply circuits and digital networks(for example, ISDN), and are manufactured in increasing volume. QA and manufacturing have to improve evaluation of transformers/LF coils, but they are faced with big measurement...

This application note describes the difference between a balanced circuit and an unbalanced circuit, and also explains how to make an unbalanced circuit measurement by the unbalanced instrument step by step.

This note describes the general application of passive component measurements in incoming inspection and R&D and shows the benefits of Keysight's Precision LCR Meter family; the 4284A and the 4285A 30 MHz LCR meters with digital Q capability.

As a result of extremely high integration of logic LSIs, MOS FETs with gate lengths of 0.1 mm or less have been produced recently. A consequence of this miniaturization has been the need for very thin gate oxide layers.